Burner for gas and oil



C P \IALLELY BURNER FOR GAS AND OI'L. APPLICATION FILED AUG.25, 1920.

UNITED STATES PATENT OFFICE.

BURNER FOR GAS AND OIL.

, Specification of Letters Patent.

Patented Oct. 18, 1921.

Application filed August 25, 1920. Serial No. 406,017.

To all w 720m it may concern:

Be it knownthat I, CORNELIUS P. VALLELY, a citizen of the United States,residing at Bradford, in the county of McKean and State of Pennsylvania,have invented certain new and usefullmprovements in Burners for Gas andOil, of which the following is a specification.

This invention relates to improvements in hydrocarbon burners, and hasfor its object to provide a simplebut efficient burner designed for usein connection with natural gas, crude petroleum and other fuel oils usedin a variety of apparatuses for heating or smelting purposes. 7

The primary object of this invention is to provide means whereby thefuel oil is atomized with steam or other fluid under pressure, and therecommingled with air or natural gas, or in combination with natural gasand oil with air in varying proportions to suit the requirements ofperfect combustion. Incidentally the means thus provided are by slightmodification adapted for use in an improvement in the means set forth inU. S. Letters. Patent No. 1,881,144, issued to me on June 14, 1921.

Other objects of the invention will be apparent from the followingdescription and claims.

In the accompanying drawings 1 have illustrated the preferred embodimentof my invention, and the improved details of construction, andarrangement of parts thereof will be apparent from the specificdescription hereinafter contained when read in connec tion with thedrawings.

In the drawings:

Figure 1 is a longitudinal section of the burner.

Fig. 2 is a cross sectional view of the burner.

ducts 6 and 7 These ducts join in the form of a Y, into the opening 8,at the mouth of the ejecting nozzle 4.

Located at the end of the ejecting nozzle 4, and forming a partialclosure to the aperture 8, is a cap 15, detachably connected by beingscrew threaded on the end of the ejector nozzle'4. The cap 15, isprovided with a centrally located opening 16' therein. The applicationof the cap 15, to the ejector nozzle 4, and its resulting effect on thefluid passing through the ejector nozzle 4, form important features ofthis invention.

Within the enlarged portion of the outer casing 1, is the cylindricalshaped cavity 9, into which extends the projectingv boss member 10,formed integral with the casing 1, and providing an annular space 11,between the said projecting boss member 10, and the outer shell of thecasing 1.

Beginning at the outer end of the nozzle 2, and extending to the end ofthe projecting boss member 10, is an enlarged aperture 12, of graduallytapering enlargement, co1nmu nicating with the cavity 9. TVithin theouter casing 1, communicating with the annular space 11, are ingressports 13 and 14, the purposes of which will hereinafter be explained. 4

Referring to Fig. 1, it will be observed that the projecting aperturedboss member 10, is circumferentially disposed around the ejector nozzle4, and that the discharge end of the ejector nozzle 4, is disposed wellforward of the axial line of the duct 13, and that the duct 14, isdisposed forward of the mouth of the aperture in theprojecting member10. The relative position of the ducts 13 and 14, in connection with theproject ing member 10, and the ejector nozzle 4, constitute importantfeatures of this invention.

Connected with the duct 6, of the ejector nozzle 4, is the pipe 6 bywhich fuel oil is drawn from any suitable source of supply (not shown)and is commingled with a suitable fiuid under pressure, fed through theduct 7, by the supply pipe 7 This fluid may be steam, compressed air ornatural gas under pressure. I prefer to use steam, as the temperature ofsteam aids in the vaporizing of the oils.

It is well known in the art, that to convert any liquid into vapor, thata cooling effect is created within the immediate zone of operation,tending to cause condensation which is wasteful and detrimental to highefliciency.

I overcome this objection by the novel arrangement of the coinminglingof the various fluids before they are projected from the burner forcombustion.

In the operation of the device as described, the oil valve (not shown)is adjusted to feed the desired proportion of oil. Steam or compressedair is then supplied to the duct 7 and is discharged through the opening8, under the influence of which a partial vacuum will be caused in theduct 6, causing a siphoning of the oil through the oil supply pipe 6 tothe point at the-intersection of the branches of the Y, where itcommingles with the. steam and is atomized thereby.

As the admixture of atomized oil and steam passes out of the ejectornozzle 4, it is projected into the aperture 12, causing a suctionthereby, which creates a partial vacuum in the cavity 9, under theinfluence of which air will be drawn through the duct 14, to aerate forcombustion purposes, and gas will be drawn through the duct 13. The cap15, is detachably connected to the injector nozzle 4, in order that itmay be readily removed, as the cap 15, is found to be most effective,and to show the highest.

efficiency when using gas alone, and when so used it carries the steamor compressed air, from the ve tex of the two ducts 6 and 7, through theopening 16, in the cap 15, of the same size as the steam or compressedair duct 7, and when so used gives a better mixture and causes a moreperfect combustion, as due to the smaller aperture 16, the

steam is not inflated by expansion when it,

strikes and .mixes with the gas drawn through the duct 13, and theatmospheric air through the duct 14.

The amount of air and the proportion of gas to be supplied will beregulated by the use of valves (not shown) in any manner well known inthe art.

As the combustible mixture is discharged from the endof the nozzle 2, itis projected into the fire box or furnace and therein ignited; Thenozzle 2, in close proximity to the zone of combustion, will becomeheated and will radiate heat into the annular space 11, into 'which isfed atmospheric air through the duct 14, causing a superheating of theair before it is commingled with the gas coming into the cavity 9,through the duct 13. Thispreheating of the air eliminates condensationand aids in vaporizing the atomized oil before it is discharged into thefire box or furnace.

From the foregoing description it willbe seen that the steam orcompressed air passing through duct 7, is the only fluid under pressure,and by the novel arrangement of my device, the oil, air and gas supplyare each drawn into the burner by the vacuum effect created by thesuction of the steam discharge, whereby an automatic feed of thesecombustible fluids is provided, self regulated in proportion to thevolume and a force of discharge of steam or other fluid under pressure.

While I have herein disclosed a particular embodiment of the invention,it will be apparent to persons skilled in the art, that changes andalterations may be made without departing from the spirit of theinvention.

What I do claim and desire to Letters Patent is:

An apparatus of the character described, comprising an internallypassaged injector barrel having an enlarged air spacetherein, aninternally apertured boss formed integral with and extending rearwardlyfrom said injector barrel and projecting into said air space, aforwardly projecting two 'feed single discharge nozzle extending thr ughsaid air space and having its discharge end disposed within the aperturein saidboss forming an annular space around said nozzle, a capdetachably mounted on the end of said discharge nozzle having a reducedaperture in axial alinement with the bore of said nozzle, ingress portsfor admission of air and gas in communication with said annular spaceand adapted to be drawn secure by therethrough by the discharge of fluidunder pressure from said nozzle.

In testimony whereof'I have affixed my signature in the presence of twowitnesses.

CORNELIUS P. VALLELY. Witnesses i F. P. SCHOONMAKER, E. M. KOCH.

